Process for producing a cast cylinder block, internal combustion engine and internal combustion engine

Abstract

The application relates to a preparation process of a cast cylinder body and an internal combustion engine and the internal combustion engine, and the cast cylinder body comprises a cylinder body casting, a filter mounting seat which comprises an outer ring and an inner ring, the surfaces of the outer ring and the inner ring are provided with machining allowances, a first oil channel, the inner ring is projected on an extension path of the first oil channel, a second oil channel, a first convex rib which is used for machining a third oil channel on the cylinder body casting, the third oil channel is arranged in parallel with the first convex rib, one end of the third oil channel is communicated with the second oil channel, the other end of the third oil channel penetrates through the bottom of the cylinder body casting, and the one end of the third oil channel which penetrates through the bottom of the cylinder body casting is adjacent to the one end of the first oil channel which penetrates through the bottom of the cylinder body casting. The application can meet the requirements of vertical internal combustion engines and horizontal internal combustion engines at the same time, improves the universality of the cast cylinder body, reduces the design workload of the cylinder body and the development of a casting mold, and lowers the cost.

Description

Technical Field

[0001] This application relates to the field of cylinder block manufacturing technology, and in particular to a casting cylinder block, a manufacturing process for an internal combustion engine, and an internal combustion engine. Background Technology

[0002] Internal combustion engines can be classified into horizontal and vertical internal combustion engines based on the arrangement of their cylinder centerlines. Due to spatial layout requirements, the oil passages and oil filter installation positions in horizontal and vertical internal combustion engines differ to some extent. For example, the oil filter in a horizontal internal combustion engine is typically located on one side of the cylinder block, usually in the middle; while in a vertical internal combustion engine, the oil filter is usually located at the bottom of the cylinder block and connected to the oil passages on the cylinder block. Because of these differences in the connection position of the oil filter to the cylinder block, the oil passages on the cylinder block usually need to be designed and adjusted accordingly to ensure that the oil filter can effectively filter the oil entering the oil passages. Therefore, when an existing internal combustion engine needs to be compatible with both horizontal and vertical internal combustion engine layouts, it usually means that two different cylinder blocks need to be designed. However, cylinder blocks are mostly cast aluminum parts, which have difficulties such as complex structure, numerous and varied molds, and long design and mold opening cycles. Two different cylinder blocks will lead to high manufacturing costs, a large number of molds, and high parts management costs for internal combustion engines. Summary of the Invention

[0003] Based on this, this application provides a casting cylinder block, a manufacturing process for an internal combustion engine, and an internal combustion engine, in order to improve the problem that the cylinder block of an internal combustion engine in the prior art is difficult to simultaneously meet the requirements of both horizontal and vertical internal combustion engine layouts.

[0004] In a first aspect, this application provides a cast cylinder block, the cast cylinder block comprising:

[0005] Cylinder block casting;

[0006] A filter mounting base is disposed on one side of the cylinder casting and in the middle of the cylinder casting. The filter mounting base includes an outer ring and an inner ring, with the inner ring disposed inside the outer ring. The surfaces of both the outer ring and the inner ring are provided with machining allowance.

[0007] The first oil passage extends vertically downward from the middle of the cylinder casting to the bottom of the cylinder casting, and the inner ring is projected onto the extension path of the first oil passage.

[0008] The second oil passage extends horizontally from one end face of the cylinder casting to the outer side of the outer ring;

[0009] The first rib extends from the second oil passage to the outer side of the outer ring and slopes downward to the bottom of the cylinder casting. The first rib is used to machine a third oil passage on the cylinder casting. The third oil passage is arranged parallel to the first rib, with one end connected to the second oil passage and the other end penetrating the bottom of the cylinder casting. The end of the third oil passage penetrating the bottom of the cylinder casting is adjacent to the end of the first oil passage penetrating the bottom of the cylinder casting.

[0010] The fourth oil passage extends horizontally from the first oil passage located in the middle of the cylinder casting to an end face of the cylinder casting away from the second oil passage, and the fourth oil passage is connected to the first oil passage.

[0011] Secondly, this application provides a manufacturing process for an internal combustion engine, the manufacturing process of which includes:

[0012] The cast cylinder block provided in this application is prepared and shaped;

[0013] Based on the different arrangements of the cylinder shafts, internal combustion engines are divided into horizontal internal combustion engines and vertical internal combustion engines.

[0014] When the cast cylinder block is used in a horizontal internal combustion engine, it is machined using a first machining process; when the cast cylinder block is used in a vertical internal combustion engine, it is machined using a second machining process.

[0015] Connect the oil filter to the machined cast cylinder block.

[0016] In one embodiment, when the cast cylinder block is used in a horizontal internal combustion engine, the cast cylinder block is machined using a first machining process, including:

[0017] The position of the inner ring projection on the extension path of the first oil passage is machined to make the first oil passage connected to the inner ring;

[0018] The end of the second oil passage extending to the outer side of the outer ring is machined to make the second oil passage communicate with the outer ring;

[0019] The first oil passage is extended to one end of the bottom of the cylinder casting and then sealed.

[0020] The first rib remains in its blank state and is not machined.

[0021] In one embodiment, when the cast cylinder block is used in a horizontal internal combustion engine, machining the cast cylinder block using a first machining process further includes:

[0022] The inner side of the inner ring is machined to form a threaded hole, which is used for the installation of the oil filter.

[0023] In one embodiment, when the cast cylinder block is used in a horizontal internal combustion engine, machining the cast cylinder block using a first machining process further includes:

[0024] The end faces of both the inner ring and the outer ring are machined into flat surfaces.

[0025] In one embodiment, connecting the oil filter to the machined cast cylinder block includes:

[0026] The oil filter is threaded into the threaded hole, and the inlet of the oil filter is connected to the outer ring, while the inner side of the oil filter is connected to the inner ring.

[0027] In one embodiment, when the cast cylinder block is used in a vertical internal combustion engine, the cast cylinder block is machined using a second machining process, including:

[0028] The third oil passage is machined onto the first rib;

[0029] The filter mounting base remains in its cast state and is not machined.

[0030] In one embodiment, connecting the oil filter to the machined cast cylinder block includes:

[0031] Install an oil filter, connect the inlet of the oil filter to the third oil passage, and connect the outlet of the oil filter to the first oil passage.

[0032] In one embodiment, installing an oil filter includes:

[0033] Connect the oil filter to the oil pan;

[0034] The oil pan is connected to the bottom of the cast cylinder.

[0035] Thirdly, this application provides an internal combustion engine, which is manufactured using any of the internal combustion engine manufacturing processes provided in this application.

[0036] This application, by rationally setting the position and connection of the oil passages in the cylinder body, and by setting a filter mounting seat and a first rib that can be machined selectively, enables the same cast cylinder body to meet the needs of both vertical and horizontal internal combustion engines, thereby improving the versatility of the cast cylinder body, reducing the design workload of the cylinder body and the development of casting molds, and lowering costs. Attached Figure Description

[0037] Figure 1 A front view of the cylinder block for a horizontal internal combustion engine provided in an embodiment of this application;

[0038] Figure 2 A front view of the cylinder block for a vertical internal combustion engine provided in an embodiment of this application;

[0039] Figure 3 An isometric view of the cylinder block for a horizontal internal combustion engine provided in an embodiment of this application;

[0040] Figure 4 An isometric view of the cylinder block for a vertical internal combustion engine provided in an embodiment of this application;

[0041] Figure 5 A front view of a horizontal internal combustion engine provided in an embodiment of this application;

[0042] Figure 6 A front view of a vertical internal combustion engine provided in an embodiment of this application;

[0043] Figure 7 This is a partial exploded view of a vertical internal combustion engine provided in an embodiment of this application.

[0044] Reference numerals: 1. Cylinder block casting; 2. Filter mounting base; 21. Outer ring; 22. Inner ring; 3. First oil passage; 4. Second oil passage; 5. First rib; 6. Third oil passage; 7. Fourth oil passage; 8. Oil filter; 9. Oil pan; 91. Oil hole. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0046] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention.

[0047] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0048] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "lateral," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Example 1

[0050] Embodiment 1 of this application provides a cast cylinder block, such as Figures 1 to 4 As shown, the cast cylinder body includes:

[0051] Cylinder block casting 1;

[0052] The filter mounting base 2 is located on one side of the cylinder casting 1 and in the middle of the cylinder casting 1. The filter mounting base 2 includes an outer ring 21 and an inner ring 22. The inner ring 22 is located inside the outer ring 21. The surfaces of the outer ring 21 and the inner ring 22 are provided with machining allowance.

[0053] The first oil passage 3 extends vertically downward from the middle of the cylinder casting 1 to the bottom of the cylinder casting 1, and the inner ring 22 is projected on the extension path of the first oil passage 3.

[0054] The second oil passage 4 extends horizontally from one end face of the cylinder block casting 1 to the outer side of the outer ring 21;

[0055] The first rib 5 extends from the second oil passage 4 to the outer side of the outer ring 21 and extends downward at an angle to the bottom of the cylinder casting 1. The first rib 5 is used to machine the third oil passage 6 on the cylinder casting 1. The third oil passage 6 is arranged parallel to the first rib 5, and one end is connected to the second oil passage 4, and the other end penetrates the bottom of the cylinder casting 1. The end of the third oil passage 6 penetrating the bottom of the cylinder casting 1 is adjacent to the end of the first oil passage 3 penetrating the bottom of the cylinder casting 1.

[0056] The fourth oil passage 7 extends horizontally from the first oil passage 3, which is located in the middle of the cylinder casting 1, to one end face of the cylinder casting 1 away from the second oil passage 4. The fourth oil passage 7 is connected to the first oil passage 3.

[0057] like Figure 1 and Figure 2As shown in this embodiment, the cylinder block casting 1 can be a cast aluminum part, that is, a casting made of aluminum alloy. The cylinder block casting 1 is used to machine the cylinder block of an internal combustion engine. That is, the cylinder block casting 1 is machined according to the actual needs to be used as the cylinder block of an internal combustion engine. The first oil passage 3, the second oil passage 4, and the fourth oil passage 7 on the cylinder block casting 1 can all be cast by core pulling, while the third oil passage 6 can be a structure waiting to be machined on the first rib 5. Similarly, the filter mounting seat 2 is also set as a structure waiting to be machined. When an internal combustion engine is divided into a horizontal internal combustion engine and a vertical internal combustion engine according to the arrangement of its cylinder centerline, the cylinder block casting 1 can be machined from either the first rib 5 or the filter mounting seat 2 to obtain a cylinder block structure suitable for a vertical internal combustion engine and a horizontal internal combustion engine, respectively.

[0058] like Figure 1 , Figure 3 and Figure 5 As shown, in this embodiment, when the cylinder block casting 1 is suitable for a horizontal internal combustion engine, the outer ring 21 of the filter mounting base 2 can be connected to the second oil passage 4. For example, the tool can be inserted into the second oil passage 4 and a hole can be drilled at the end of the second oil passage 4 near the outer side of the outer ring 21 until the outer ring 21 is penetrated. At the same time, the inner ring 22 of the filter mounting base 2 can also be connected to the first oil passage 3. For example, a hole can be drilled at the position where the inner ring 22 is projected onto the first oil passage 3. When machining the filter mounting base 2, the first rib 5 can be kept in a blank state. The aforementioned machining process can be referred to as the first machining process. Furthermore, to facilitate the installation and arrangement of the oil filter 8 on the filter mounting base 2, the inner side of the inner ring 22 can be machined to form a threaded hole, allowing the oil filter 8 to be threaded onto the inner ring 22. The inlet of the oil filter 8 can communicate with the outer ring 21, and the outlet of the oil filter 8 can communicate with the inner ring 22. To ensure the airtightness of the connection between the inlet of the oil filter 8 and the outer ring 21, and the connection between the outlet of the oil filter 8 and the inner ring 22, the end faces of the outer ring 21 and the inner ring 22 can be machined to form flat surfaces. In a horizontal internal combustion engine, when the engine oil flows through the cylinder block, it can enter the cylinder block from the second oil passage 4, and then enter the oil filter 8 from the outer ring 21. After being filtered by the oil filter 8, it flows from the inner ring 22 to the first oil passage 3, and then flows to the fourth oil passage 7.

[0059] like Figure 2 , Figure 4 and Figure 6As shown, when the cylinder block casting 1 is used for a vertical internal combustion engine, the third oil passage 6 can be machined on the first rib 5, while keeping the filter mounting seat 2 in a blank state. This machining process can be called the second machining process. It should be noted that the first and second machining processes are only used to distinguish between the two machining processes and are not used to limit the machining process. When the third oil passage 6 on the cylinder block casting 1 is machined, one end can be connected to the second oil passage 4, and the other end can be located next to the end of the first oil passage 3 that extends to the bottom of the cylinder block casting 1. After the oil filter 8 is installed, the inlet of the oil filter 8 can be connected to the end of the third oil passage 6 that extends to the bottom of the cylinder block casting 1, and the outlet of the oil filter 8 can be connected to the end of the first oil passage 3 that extends to the bottom of the cylinder block casting 1. In a vertical internal combustion engine, when the engine oil flows through the cylinder block, it can enter the cylinder block through the second oil passage 4, then enter the oil filter 8 after flowing through the third oil passage 6, and after being filtered by the oil filter 8, it enters the first oil passage 3, and then flows to the fourth oil passage 7.

[0060] It is understandable that by reasonably setting the position and connection of the oil passages in the cylinder body, and by setting a filter mounting seat 2 and a first rib 5 that can be machined separately, the same cast cylinder body can meet the needs of both vertical and horizontal internal combustion engines, thereby improving the versatility of the cast cylinder body, reducing the design workload of the cylinder body and the development of casting molds, and reducing costs.

[0061] Example 2

[0062] Embodiment 2 of this application provides a manufacturing process for an internal combustion engine, which includes the following steps:

[0063] S100. The cast cylinder block provided in this application is prepared and shaped;

[0064] S200. Based on the different arrangements of the cylinder shaft, internal combustion engines are divided into horizontal internal combustion engines and vertical internal combustion engines.

[0065] S300. When the cast cylinder block is used in a horizontal internal combustion engine, the cast cylinder block is machined using the first machining process; when the cast cylinder block is used in a vertical internal combustion engine, the cast cylinder block is machined using the second machining process.

[0066] S400, Connect the oil filter 8 to the machined cast cylinder block.

[0067] like Figures 1 to 7As shown in this embodiment, by way of example, in step S100, after the cast cylinder block is formed, in addition to machining using the first machining process or the second machining process, other machining processes can be performed according to actual needs, such as machining the cylinder bore, machining the connecting surface with the cylinder head, etc. In step S200, the machining process of the cast cylinder block can be determined according to the actual needs of the internal combustion engine layout. In step S300, after the internal combustion engine layout is determined, the corresponding machining process can be used to machine the cylinder block. The first machining process can be used to machine the cast cylinder block into a horizontal internal combustion engine cylinder block, which can be called S300′; the second machining process can be used to machine the cast cylinder block into a vertical internal combustion engine cylinder block, which can be called S300″. It is easy to understand that steps S300′ and S300″ are selected for processing. In step S400, after the cylinder block is machined according to the specified machining process, the oil filter 8 is installed in the specified position so that the oil filter 8 is connected to the oil passage structure of the cylinder block.

[0068] It is understandable that by using different machining processes to perform appropriate machining on the same cast cylinder block, this application can enable the same cast cylinder block to simultaneously meet the requirements of both vertical and horizontal internal combustion engines, thereby improving the versatility of the cast cylinder block, reducing the design workload of the cylinder block and the development of casting molds, and lowering costs.

[0069] Specifically, when the cast cylinder block is used in a horizontal internal combustion engine, the cast cylinder block is machined using the first machining process (i.e., step S300'), including the following steps:

[0070] S310. The position of the inner ring 22 projected on the extension path of the first oil passage 3 is machined so that the first oil passage 3 is connected to the inner ring 22.

[0071] S320. The end of the second oil passage 4 extending to the outer side of the outer ring 21 is machined so that the second oil passage 4 is connected to the outer ring 21.

[0072] S330, The first oil passage 3 is extended to one end of the bottom of the cylinder block casting 1 and then sealed;

[0073] S340. Keep the first rib 5 in its blank state and do not perform machining on the first rib 5.

[0074] like Figure 1 and Figure 3As shown in this embodiment, by way of example, in step S310, when the first oil passage 3 extends vertically, it can pass through the center of the inner ring 22. The position of the inner ring 22 projected onto the extension path of the first oil passage 3 is the center of the inner ring 22. Drilling a hole in this center will connect the first oil passage 3 to the inner ring 22. In step S320, after the cylinder block casting 1 is cast, the second oil passage 4 is not through-hole positioned at one end extending to the outer side of the outer ring 21. In the first machining process, the tool can be inserted from the second oil passage 4, and a hole can be drilled at the end of the second oil passage 4 extending to the outer side of the outer ring 21 so that the second oil passage 4 passes through the outer ring 21 and thus connects with the outer ring 21. Steps S330 and S320 can be performed simultaneously, and there is no need to specify the order. In step S330, after the aforementioned drilling process is completed, the first oil passage 3 can be extended to one end of the cylinder casting 1 and sealed with a screw plug, so that the oil entering the first oil passage 3 can only flow to the fourth oil passage 7, thus preventing the oil from leaking out from the bottom of the first oil passage 3. In step S340, the first rib 5 remains in its original blank state without being machined.

[0075] It is understandable that this embodiment uses a reasonable first machining process to machine the cast cylinder block, which can make the cast cylinder block meet the usage requirements of a horizontal internal combustion engine.

[0076] More specifically, when the cast cylinder block is used in a horizontal internal combustion engine, machining the cast cylinder block using the first machining process (i.e., step S300') also includes the following steps:

[0077] S350. The inner side of the inner ring 22 is machined to form a threaded hole on the inner side of the inner ring 22. The threaded hole is used for the installation of the oil filter 8.

[0078] like Figure 1 and Figure 3 As shown in this embodiment, by way of example, in step S350, the inner side of the inner ring 22 can be further threaded to form a threaded hole, and the oil filter 8 can be threaded onto the inner ring 22. Step S350 can be performed immediately after step S310 is completed; at the same time, step S350 is preferably completed before step S330 to avoid aluminum shavings formed by machining falling into the first oil passage 3 after it is blocked.

[0079] It is understandable that, through further machining of the inner ring 22, this embodiment facilitates the connection of the oil filter 8 to the cylinder block of the horizontal internal combustion engine.

[0080] More specifically, when the cast cylinder block is used in a horizontal internal combustion engine, machining the cast cylinder block using the first machining process (i.e., step S300') also includes the following steps:

[0081] S360. The end faces of both the inner ring 22 and the outer ring 21 are machined into flat surfaces.

[0082] like Figure 1 , Figure 3 and Figure 5 As shown in this embodiment, by way of example, in step S360, since the inner ring 22 and the outer ring 21 protrude from the surface of the cylinder casting 1, the end faces of the inner ring 22 and the outer ring 21 can be understood as the side of the protruding portion of the inner ring 22 and the outer ring 21 that is away from the surface of the cylinder casting 1. When the oil filter 8 is threaded onto the inner ring 22, the oil filter 8 can also abut against both the outer ring 21 and the inner ring 22 to seal both the outer ring 21 and the inner ring 22, thereby allowing the oil to smoothly enter the oil filter 8 when it flows to the outer ring 21 and smoothly flow from the oil filter 8 to the first oil passage 3. In this embodiment, by machining the end faces of the inner ring 22 and the outer ring 21 into flat surfaces, the airtightness of the connection between the oil filter 8 and the outer ring 21 and the inner ring 22 can be enhanced.

[0083] More specifically, connecting the oil filter 8 to the machined cast cylinder block (i.e., step S400) includes the following steps:

[0084] S410. Thread the oil filter 8 into the threaded hole, and connect the inlet of the oil filter 8 to the outer ring 21, and connect the inner side of the oil filter 8 to the inner ring 22.

[0085] like Figure 3 and Figure 5 As shown in this embodiment, by way of example, in step S410, when the oil filter 8 is connected to the cylinder block of the horizontal internal combustion engine, the oil filter 8 can be configured with an outer inlet and an inner outlet. When the oil filter 8 is threaded onto the inner ring 22, placing the outer side of the oil filter 8 against the end face of the outer ring 21 allows the inlet of the oil filter 8 to communicate with the outer ring 21, thereby allowing the oil entering the outer ring 21 from the second oil passage 4 to enter the oil filter 8; while placing the inner side of the oil filter 8 against the end face of the inner ring 22 allows the outlet of the oil filter 8 to communicate with the inner ring 22, thereby allowing the oil entering the oil filter 8 to enter the first oil passage 3.

[0086] Specifically, when the cast cylinder block is used in a vertical internal combustion engine, the cast cylinder block is machined using a second machining process (i.e., S300″), including the following steps:

[0087] S370, the third oil passage 6 is machined on the first rib 5;

[0088] S380. Keep the filter mounting base 2 in its cast state; the filter mounting base 2 is not machined.

[0089] like Figure 2 and Figure 4 As shown in this embodiment, by way of example, in step S370, the first rib 5 can be drilled. During drilling, the feed can be made along the extension direction of the first rib 5, i.e., at an angle, to obtain the third oil passage 6, which is in the same extension direction as the first rib 5. When drilling the third oil passage 6, the hole needs to be drilled to the end of the second oil passage 4 extending to the outer side of the outer ring 21. In step S380, the filter mounting base 2 remains in its original blank state without machining.

[0090] It is understandable that this embodiment uses a reasonable second machining process to machine the cast cylinder block, which can make the cast cylinder block meet the usage requirements of a vertical internal combustion engine.

[0091] Connecting the oil filter 8 to the machined cast cylinder block (i.e., step S400) includes the following steps:

[0092] S420. Install oil filter 8, and connect the inlet of oil filter 8 to the third oil passage 6, and connect the outlet of oil filter 8 to the first oil passage 3.

[0093] like Figure 2 , Figure 4 and Figure 6 As shown in this embodiment, by way of example, in step S410, when the oil filter 8 is used in a vertical internal combustion engine, the oil filter 8 can be configured with one side as the inlet and the other side as the outlet. In this case, the inlet and outlet positions of the oil filter 8 can correspond precisely to the end of the third oil passage 6 extending to the bottom of the cylinder block casting 1 and the end of the first oil passage 3 extending to the bottom of the cylinder block casting 1, respectively, and are connected. It is easy to see that if steps S300′ and S300″ are performed, steps S410 and S420 should also be performed.

[0094] More specifically, installing the oil filter 8 (i.e., step S420) includes the following steps:

[0095] S421. Connect the oil filter 8 to the oil pan 9;

[0096] S422. Connect the oil pan 9 to the bottom of the cast cylinder block.

[0097] like Figure 4 , Figure 6 and Figure 7As shown in this embodiment, by way of example, the oil filter 8 can be arranged on the oil pan 9 to indirectly connect to the cylinder block. Oil holes 91 can be provided at positions corresponding to the ends of the third oil passage 6 extending to the bottom of the cylinder block casting 1 and the first oil passage 3 extending to the bottom of the cylinder block casting 1. The oil holes 91 can be equipped with sealing rings to enhance airtightness. The third oil passage 6 and the first oil passage 3 communicate with the oil filter 8 through the oil holes 91. In step S421, a mounting base can be integrated onto the oil pan 9, and the oil filter 8 can be threaded onto the mounting base. In step S422, the oil pan 9 and the bottom of the cast cylinder block can be detachably connected by bolts.

[0098] Example 3

[0099] Embodiment 3 of this application provides an internal combustion engine, which is manufactured using any of the internal combustion engine manufacturing processes provided in this application.

[0100] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0101] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cast cylinder block, characterized in that, The cast cylinder body includes: Cylinder block casting (1); A filter mounting base (2) is disposed on one side of the cylinder casting (1) and in the middle of the cylinder casting (1). The filter mounting base (2) includes an outer ring (21) and an inner ring (22). The inner ring (22) is disposed inside the outer ring (21). The surfaces of the outer ring (21) and the inner ring (22) are provided with machining allowance. The first oil passage (3) extends vertically downward from the middle of the cylinder casting (1) to the bottom of the cylinder casting (1), and the inner ring (22) is projected onto the extension path of the first oil passage (3). The second oil passage (4) extends horizontally from one end face of the cylinder casting (1) to the outside of the outer ring (21); The first rib (5) extends from the second oil passage (4) to the outer side of the outer ring (21) and extends downward at an angle to the bottom of the cylinder casting (1). The first rib (5) is used to machine the third oil passage (6) on the cylinder casting (1). The third oil passage (6) is arranged parallel to the first rib (5), and one end is connected to the second oil passage (4), and the other end penetrates the bottom of the cylinder casting (1). The end of the third oil passage (6) penetrating the bottom of the cylinder casting (1) is adjacent to the end of the first oil passage (3) penetrating the bottom of the cylinder casting (1). The fourth oil passage (7) extends horizontally from the first oil passage (3) located in the middle of the cylinder casting (1) to one end face of the cylinder casting (1) away from the second oil passage (4), and the fourth oil passage (7) is connected to the first oil passage (3).

2. A manufacturing process for an internal combustion engine, characterized in that, The manufacturing process of the internal combustion engine includes: The cast cylinder block as described in claim 1 is prepared and shaped; Based on the different arrangements of the cylinder shafts, internal combustion engines are divided into horizontal internal combustion engines and vertical internal combustion engines. When the cast cylinder block is used in a horizontal internal combustion engine, it is machined using a first machining process; when the cast cylinder block is used in a vertical internal combustion engine, it is machined using a second machining process. Connect the oil filter (8) to the machined cast cylinder block.

3. The manufacturing process of the internal combustion engine according to claim 2, characterized in that, When the cast cylinder block is used in a horizontal internal combustion engine, the cast cylinder block is machined using a first machining process, including: The position of the inner ring (22) projected onto the extension path of the first oil passage (3) is machined so that the first oil passage (3) is connected to the inner ring (22); The end of the second oil passage (4) extending to the outside of the outer ring (21) is machined so that the second oil passage (4) is connected to the outer ring (21); The first oil passage (3) is extended to one end of the bottom of the cylinder casting (1) and then sealed. The first rib (5) remains in its blank state and is not machined.

4. The manufacturing process of the internal combustion engine according to claim 3, characterized in that, When the cast cylinder block is used in a horizontal internal combustion engine, machining the cast cylinder block using the first machining process further includes: The inner side of the inner ring (22) is machined to form a threaded hole on the inner side of the inner ring (22), which is used for the installation of the oil filter (8).

5. The manufacturing process of the internal combustion engine according to claim 4, characterized in that, When the cast cylinder block is used in a horizontal internal combustion engine, machining the cast cylinder block using the first machining process further includes: The end faces of both the inner ring (22) and the outer ring (21) are machined into flat surfaces.

6. The manufacturing process of the internal combustion engine according to claim 5, characterized in that, Connecting the oil filter (8) to the machined cast cylinder block includes: The oil filter (8) is threaded into the threaded hole, and the inlet of the oil filter (8) is connected to the outer ring (21), and the inner side of the oil filter (8) is connected to the inner ring (22).

7. The manufacturing process of the internal combustion engine according to claim 2, characterized in that, When the cast cylinder block is used in a vertical internal combustion engine, the cast cylinder block is machined using a second machining process, including: The third oil passage (6) is machined on the first rib (5); The filter mounting base (2) is kept in its cast state and is not machined.

8. The manufacturing process of the internal combustion engine according to claim 7, characterized in that, Connecting the oil filter (8) to the machined cast cylinder block includes: Install an oil filter (8), and connect the inlet of the oil filter (8) to the third oil passage (6) and connect the outlet of the oil filter (8) to the first oil passage (3).

9. The manufacturing process of the internal combustion engine according to claim 8, characterized in that, Installing an oil filter (8) includes: Connect the oil filter (8) to the oil pan (9); Connect the oil pan (9) to the bottom of the cast cylinder.

10. An internal combustion engine, characterized in that, The internal combustion engine is manufactured using the manufacturing process described in any one of claims 2 to 9.

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